Question

Write the equation for the line using the given information. Write the equation in slope-intercept form, y = mx + b.

Write the equation of the line with slope = 5 and passing through the point
(−4, −7).

Answer 1

you already have all the info to solve this...
slope=5 so... m=5
points (x, y) so,.. x = -4 and y=-7
now sub those values into the given slope - intercept formula ... then solve for "b" which is the y intercept

Answer 2

what equation did u get ..?

Answer 3

So i take those and substitute them into the equation for b?

Answer 4

yes like this
y=mx+b
-7=5(-4)+b
now solve for "b"

Answer 5

7/20?

Answer 6

no...
first we multiply the parentheses ..we get
-7=-20+b
then we add 20 to both sides of the equation ...we get
-7+20=-20+20+b
simplify we get
20-7=b
...whats b=?

Answer 7

13?

Answer 8

great i got it thank you!

Answer 9

yes and thats the y intercept now we write the equation using the slope and y intercept
y=mx+b ... we just sub the value of "m" and "b"