A scientific experiment required that temperatures be lowered at a steady and gradual rate. The beginning temperature was 36°C. The graph shows the decline in temperature.

Question

A scientific experiment required that temperatures be lowered at a steady and gradual rate. The beginning temperature was 36°C. The graph shows the decline in temperature. Which equation can you use to find the temperature on the sixth day?

Answer 1

You need the graph to determine the slope ( rise over run ).

We know the y-intercept = 36

So when you plug into y = mx + b you get

y = mx + 36

From your graph find the slope which = m and substitute into this equation.