HELP HELP GRADE ten math?

Question

I need some help with grade ten math such as equation and slope , y-intercept and so on. thanks

Answer 1

What specifically do you need help on? Try posting a question and we'll walk you through it.

A few tips:

Slope-Intercept form:
y = mx + b
where m is the slope and b is the y-intercept.
(The y-intercept is where the line crosses the y-axis.)

Slope is found this way:
If you have two point (a, b) and (c, d), the equation for slope is

m = (d - b) / (c - a)
(Otherwise known as "Change in y-values / change in x-values")

Answer 2

The slope -intercept for of the equation of a straight line is
y = mx + b, where m is the slope of the line and b is the y-intercept. The y-intercept is where the line crosses the y-axis.
You can find it by setting x = 0. The slope can be found by dividing the change in y by the change in x. If when you move allong the x axis 5 units, the y value increases by 10 units, then the slope = 10/5 = 2.

If as you move from left to right on the line the line drops like walking down a hill, the slope is negative. If as you move fro left to right the line rises, then the slope is positive.

If the line is parallel to the x-axis, the slope is zero
If the line is parallel to the y-axis, the slope is undefined and there is no y-intercept.

Answer 3

y=mx+b

x and y are the coordinates on the line

m=slope
b=y-intercept

for instance:

y=4x+8

When x=0, then y=8...that is the y-intercept (the value when x=0) because it crosses the y-axis at 8. You can always figure the y intercept by setting x=0.

To determine the slope, you need the y-intercept and a point on the line (x,y) or two points on the line because in general, the slope is the rise over the run (rise is y and run is x). If you have two points on the line (like if you can see the graph of the line and pick two points:

m = (y2 - y1) / (x2 - x1)

where y2 is the 2nd y, y1 is the 1st y, x2 is the 2nd x, etc.

Answer 4

just go ahead & ask me any ques.. anytime u wish....
u can even email me....i'll answer it...

go ahead !!!!!


Equation of a Straight Line

* The angle which a line makes with the positive direction of x-axis measured in the anti-clockwise direction is called the inclination of the line.
* If ( 90°) is the inclination of a line, then tan is called its slope (or gradient).
* Slope of a line.
(i) If the inclination of a line is , its slope = m = tan Ө
(ii) Slope of a line through (x1, y1) and (x2, y2) is given by m =(y2 -y1)/(x2 -x1)
* Equation of a straight line.
(i) Equation of a line parallel to x-axis is y = b.
(ii) Equation of a line parallel to y-axis is x = a.
(iii) Equation of a line with slope m and y-intercept c is
y = m x +c.
(iv) Equation of a line through (x1, y1) and with slope m is y -y1 = m (x -x1).
* Conditions of parallelism and perpendicularity.
Two lines with slopes m1 and m2 are
(i) parallel if and only if m1 = m2.
(ii) perpendicular if and only if m1m2 = -1.
* Reflection of P(a,b ) in the line y = x is P'(b,a).

Answer 5

let x be the number of apartment for 850 per month and y the number apartment for 1050 per month x + y = 80 this equation represents the number of apartment in terms of x and y 850x + 1050y = 78,400 this equation represents the income in terms of x and y so you have yourself a system of equation there x + y = 80 850x + 1050y = 78,400 substitution method x = 80 - y replace it in the next equation 850(80 - y) + 1050y = 78,400 68000 - 850y + 1050y = 78,400 200y = 10,400 y =52 52 rooms with 2 bedrooms x - y = 80 x - 52 = 80 x = 28 28 rooms with 1 bedroom

Answer 6

y=mx+c
m is the gradient ie change in y over change in x
c is the y intercept

Answer 7

then you need to be talking to a teacher during or after school

Answer 8

slope intercept---- y = mx + b

slope----- y1-y2 / x1- x2

Answer 9

there is no better way to learn than to learn by yourself... i am sure your teacher is ready to help you out if you find the going tough..

Answer 10

what school do you go to