Question

slope-intercept form (7,9):perpendicular to x=7

Answer 1

so perpendicular means the slope must be the negative reciprocal, so if the slope of x=7 is 1, then the slope of the perpendicular line must be -1/1, or just -1.

Answer 2

so we have y=mx+b
y=-1x+b

Answer 3

plug in the point (7,9) into the function for x & y and solve for b

Answer 4

then place into the form y=mx+b

Answer 5

still having trouble

Answer 6

so how far can you get on your own?

Answer 7

i got it to the plug in the numbers now i dont know to to put in y=mx+b

Answer 8

so what do you find for b?

Answer 9

b=16 right

Answer 10

yup so you have m=-1, and b=16, and x and y are just variables

Answer 11

so y=-x+16

Answer 12

oh ok i thought i had to have number also than you

Answer 13

nope!