Step-by-step explanation:
Just pick a bunch of values of x, and use the formula to find the corresponding value of y.
For example
When x = 0, y = 0+5 = 5 ----> Plot the point (0,5) on graph paper
When x = 1, y = 1+5 = 6 ----> Plot the point (1,6) on graph paper
When x = 2, y = 2+5 = 7 ----> Plot the point (2,7) on graph paper
Then connect the dots to get a linear graph. You should get a graph that looks like the one attached.
<span>120 miles----------------------1 hour.
45 miles ----------------------?? x hours
x= 45 / 120 = 0.375 hours
</span>
It's not clear what polynomial you posted, but let's say you had the polynomial
5x^3+7x^2-9x+10
This is a cubic polynomial as the largest exponent is 3. The degree is also 3. The degree of the polynomial is equal to the largest exponent.
-28+2r+3r+5
simplified it is -23+5r