Hotmath Practice Problems

Graph the relation on your calculator.

{(8, 6), (2, –6), (5, 0), (1, –4)}

Graph the relation on your calculator.

{(3, 3), (3, –3), (–3, 3), (–3, –3)}

Use a graphing calculator.

{(0, 3), (5, –8), (3, 0), (8, –5)}

a. Graph the relation.

b. Write the coordinates of the inverse. Then, graph the inverse.

c. Name the quadrant in which each point of the relation and its inverse lies.

This solution assumes that you have a TI–83/84 graphing calculator at hand.

Use a graphing calculator.

a. Graph the relation {(–25, –12), (34, 19), (20, 8)}.

b. Write the coordinates of the inverse of the relation. Then, graph the inverse.

c. Name the quadrant in which each point of the relation and its inverse lies.

This solution assumes that you have a TI–83/84 graphing calculator at hand.

Use your graphing calculator to graph the line

y = 3(x – 2) + 4.

Then use the Value feature to find the y–intercept. Round the answer to the nearest hundredth, if necessary.

Use your graphing calculator to graph the line

y = 2.4x – 3.1.

Then use the Zero feature to find the x–intercept. Round the answer to the nearest hundredth, if necessary.

Use your graphing calculator to graph the line

Then use the Zero feature to find the x–intercept. Write the answer as a fraction.

Use your graphing calculator to graph the line

y = 2x + 5.

Use the Zero feature to find the x–intercept. Round to the nearest hundredth if necessary. Graph the vertical line through the x–intercept.

Plot the two points (1, 4) and (–2, –3) on your graphing calculator. Use the linear regression feature to find the equation of the line connecting them, and graph it.

Graph the points (25, 155) and (37, 369) on your graphing calculator. Use the linear regression feature to find the equation of the line connecting them, and graph the portion of the line with positive y–values.