5.1-5.2 Quiz Review

5.1 - 5.2QUIZ Review

TRIVIAL

Slope & Slope-Intercept form

start

QUESTION 1/6 - types of slope

Question 1/6 - Types of slope

Explanation

Remember that we can't divide by 0, so a slope of 7/0 means the line is undefined.

QUESTION 2/6 - slope from graph

QUESTION 2/6 - slope from graph

Explanation

From the y-intercept, the next point on the graph is up 2 and right 5 units.

QUESTION 3/6 - context

Archimedes drained the water in his tub. The amount of water left in the tub (in liters) as a function of time (in minutes) is graphed.

QUESTION 3/6 - context

Explanation

Remember that the y-intercept is the initial/starting value in a linear relationship.

QUESTION 4/6 - Graphing

QUESTION 4/6 - Graphing

Explanation

Keep climbing! Remember that the line y = -2/3x + 2 goes down two and right 3 spaces consistently & crosses the y-axis at (0,2).

QUESTION 5/6 - Interpret

The cost to rent a car, c(x), is given by the equation c(x) = 0.12x + 75, where x is the number of miles driven.

QUESTION 5/6 - Interpret

Explanation

The constant term (the number without the x attached) is the y-intercept, which represents a fixed starting amount.

QUESTION 6/6 - Application

The temperature, t, in Burrtown starts at 32°F at midnight, when h = 0. For the next few hours, the temperature drops 2 degrees every hour. Which equation represents the temperature, t, at hour h?

QUESTION 6/6 - Application

Explanation

The starting temperature is 32 degrees, so that is the constant y-intercept. The temperature drops 2 degrees every hour, so the slope (# attached to x) is -2.

End of the review!

Good work! Feel free to complete this review again, or take a look back at your 5.1 & 5.2 lessons. Then, make sure you complete the 5.1-5.2 Quiz in Canvas!