This is the last 1 I need help with!
The y-intercept of the graph of
5x-3y = 7 is
A. -7/3
B. 7/5
C. 5/3
D. 7
Please help me figure out the answer by showing me how to solve it.
Thank you!
2006-09-08 16:57:36 · 4 answers · asked by bluskygreengrass 5 in Education & Reference ➔ Higher Education (University +)
To find the y-intercept, you could rewrite the equation in slope-intercept form. To do so, solve the equation for y:
5x - 3y = 7
-3y = -5x + 7
3y = 5x - 7
y = (5/3)x - (7/3)
So, the y-intercept is -7/3.
Also, the y-intercept is where x = 0. So, you could substitute in 0 for x in the original equation and solve for y:
5(0) - 3y = 7
-3y = 7
y = -(7/3)
This method also gives us a y-intercept of -7/3.
So, the answer is A.
2006-09-08 17:16:07 · answer #1 · answered by dramaman22 3 · 0⤊ 0⤋
The y intercept is when X is = to 0, and Y can be any number
(0, Y)
, so you would set up your equation as
5(0)-3y= 7
0-3y= 7
-3y= 7
y= -(7/3)
2006-09-08 17:11:59 · answer #2 · answered by adeptkimberly 3 · 1⤊ 0⤋
AT the y-intercept, x =0
5(0) -3y = 7
-3y = 7
y=-7/3
A.
2006-09-08 17:04:29 · answer #3 · answered by Mr Cellophane 6 · 1⤊ 0⤋
D. Nothing to solve.
2006-09-08 17:02:15 · answer #4 · answered by Anonymous · 0⤊ 1⤋