Answer:

y is less than or equal to negative three fourths times x plus 2
Step-by-step explanation:
step 1
Find the equation of the solid line
we have the coordinates (0,2) and (4,-1)
Find the slope m
The formula to calculate the slope between two points is equal to

substitute



<em>Find the equation of the line in slope intercept form</em>

where
m is the slope
b is the y-intercept (value of y when the value of x is equal to zero)
we have

---> is given
substitute

Remember that
The shading area is below the line
therefore
The inequality is

y is less than or equal to negative three fourths times x plus 2
You set the expressions equal to each other since they are congruent, then solve.
5x + 24 = 9x - 17
First subtract 24 from both sides to get
5x = 9x - 41
The subtract 9x from both sides to get
-4x = -41
Then divide both sides by -4 to get
x = 41/4 or as a decimal x = 10.25
Pease show a picture of the shape
If you mean what common factor they have, the answer is below, as I do not think that you asked how much is 78/19=4.10
only number 1
19 is a prime number so
19=1*19
78=1*2*3*13
only factor they have is 1