# Find the equations of line in y = mx + b form…a) Passes through the points (7, 9) and (2, -2)

Find the equations of line in y = mx + b form...
a) Passes through the points (7, 9) and (2, -2)

## This Post Has 5 Comments

1. faithbar0911p5p68a says:

$y = - 0.5x + 5.5$

Step-by-step explanation:

finding the slope

$\frac{3 - 1}{5 - 15} = - \frac{1}{2}$

m is the slope

$- 0.5x + b = y$

we can get y from any point but that goes for x,too

$- 0.5(5) + b = 3 \\ b = 2.5 + 3 \\ b = 5.5$

the equation is

$y = -0.5x + 5.5$

2. mikestarjo2173 says:

y = 11/5x - 32/5

Step-by-step explanation:

y2 - y1 / x2 - x1

-2 - 9 / 2 - 7

-11 / -5

= 11/5

y = 11/5x + b

-2 = 11/5(2) + b

-2 = 22/5 + b

-32/5 = b

3. Expert says:

$450.00 for 6 weeks or$300

step-by-step explanation:

$200.00 for first week$50.00 x5 equals $250 plus$200 equals $450.00 for six weeks.$200 for first week

$200 x 0.10 =$20

$20 x 5 =$100

$200 +$100 = \$300

4. lorenzomendi1011 says:

y = 4x - 7

Step-by-step explanation:

Finding the slope:

$\frac{13+15}{5+2}=\frac{28}{7}=\boxed{4}$

The slope is 4.

Finding the y-intercept:

$y=4x+b\\\\13=4(5)+b\\\\13=20+b\\\\13-20=20-20+b\\\\\boxed{-7=b}$

The equation is $y=4x-7$.

Hope this helps.

5. Expert says:

goog may have it for you

$Match each transformation or sequence of transformations to an equivalent transformation or sequence$