Question

writing an equation of a line that is perpendicular to y=2x-5 and passes through (1,7)

Answer 1

if i line is perpendicular, that means that the slope is the negative reciprocal. since the slope is 2, the negative reciprocal of 2 is -1/2
plug 1 in for the x coordinate and 7 in for the y
7 = -1/2(1) + b
7 = -1/2 + b
b = 7.5

y = -1/2x + 7.5

Answer 2

i think :)

Answer 3

thanks :)