How might you eliminate the x-term from the top equation?
15x + 7y= 4
5x + 7y= 2
A. Subtract the bottom equation from the top equation.
B. Add the bottom equation to the top equation.
C. Multiply the bottom equation by two before subtracting it from the
top equation
D. Multiply the bottom equation by three before subtracting it from
the top equation.

D

Step-by-step explanation:

To eliminate x, you need to multiply by 3, then subtract.

Can't explain more! Simple as That!

Hope this helps!

P.S. Stay Safe!

there is no question content here, but you for the free points! : d

c. y = 1/4 x + 5

step-by-step explanation:

first, put the equation of the line on the graph into slope-intercept form

(y = mx + b):   y = -4x + 8

second, a perpendicular line has to have "an opposite/reciprocal slope" to the original slope. so, find the "m" value in your original equation (it's -4, right? )

original slope: m = -4   perpendicular slope: change the sign to its opposite and find the reciprocal ("flip" the number)

new slope is now positive (b/c the original slope was negative 4), and it's 1/4 (not the original slope of 4 or 4/1)