Which of the following equations describes the graph? a. y = -3×^2 + 4b. y = 3×^2 + 4c. y = 3×^2 - 4d. y = -3×^2 - 4

C. y = 3×^2 - 4

Step-by-step explanation:

Remember that to evaluate a graph when you have options you just ahve to calculate the Y and x intersect, so the grap will intersect with the Y axis when x=0, evaluate Y=3x^2-4 when x=0

y=3(0)^2-4

y=-4

So the graph will touch y when it is at -4. That makes this ecuation the correct for the graph given.

Remember too that when the sign of x is negative the grph grows downward, since this is growing upward the sign of X should be positive.

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y = 5x + 17

step-by-step explanation:

a perpendicular line will be the opposite reciprocal slope of the given equation.   the slope given is -1/5 so the opposite reciprocal is 5

find b:

7 = 5 (-2) + b

7 = -10 + b

17 = b

write equation

y = 5x + 17