Linear Equation Real World

A strong cold front blew through during the night.  The temperature outside began to drop rapidly.  The graph shows the temperature at each hour after the cold front blew through.  What is the rate of change of the graph?

In the equation y=mx+b, what does the m represent?

What is the slope in the equation y=2x + 3?

What is the y-intercept in the equation
y= -2x + 5

What is the y-intercept for the given graph?

Which equation has the greatest rate of change (slope)?

Find the slope of the line.

After paying $5.12 for a salad, Kamauri has $27.10. How much money did he have before buying the salad?

Which equation would describe "two times a number plus five equals 15"?

What is the first step in solving this equation:
5x + 7 = 12