a) y=x^2-3 B) y=2x-3
^ means to the power of
please help me
2007-10-20 08:31:47 · 7 answers · asked by gigi90232 2 in Education & Reference ➔ Homework Help
the first is a parabola. the parabola is moved 3 down (as in the vertex is at (0,-3)) it also opens upward
the second is just a line. the y intercept is at (0,-3) and the slope of the line is 2
2007-10-20 08:57:50 · answer #1 · answered by soxchick 2 · 0⤊ 0⤋
well if one can't draw the graph but still have to describe the shape of the graphs ( only 2 equations)
one has to do a chapter of curve tracing ( in it there are lot of conditions to find asymptotes , points of maxima, minima ,inflexion, contraflexion etc,)
but to tell you in a line compare the equations with the standard equations like a) matches somewhat the equation of a parabola
y=x^2; but by subtracting a constant value 3 from the curve means that the curve is shifted downwards by a 3 units;
b) equation is clearly of a straight line and it means that the line has a slope of 2 and a x-intersection at +2/3 ,;
2007-10-20 08:40:00 · answer #2 · answered by mohit 2 · 0⤊ 0⤋
a. A curve that crosses the x-axis at y = -3 and crosses the y-axis twice, at x = sqrt3 and x = -sqrt3 The lines curve up in both directions.
b. A straight line that crosses the x-axis at y = -3 and the y-axis at x = 1.5
The line has a slope of 2, which means it goes up faster than it goes over. The slope is positive, which means it goes up to the right and down to the left.
2007-10-20 08:37:41 · answer #3 · answered by Steve A 7 · 0⤊ 0⤋
the first one is a parabola because there's a x^2 and it's vertex is at (0,-3) and the second one is a line because there's only 1 x and it's in the y=mx+b form. it crosses (0,-3) and it has a slope of 2
2007-10-20 08:36:33 · answer #4 · answered by Imclc 2 · 0⤊ 0⤋
A) will be a bucket shaped graph as it has x^2 in the equation and will gross the y axis at -3
b) will be a straight line graph
2007-10-20 08:44:44 · answer #5 · answered by Anonymous · 0⤊ 0⤋
a) linear wit a yint of (0,4) and goes up 2 left one for every point. slope is 2/1[rise over run] b)parabola that is down one
2016-05-23 22:08:59 · answer #6 · answered by paris 3 · 0⤊ 0⤋
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2007-10-20 08:40:10 · answer #7 · answered by hiimmunish 1 · 0⤊ 0⤋