STAAR Math Midterm Finals Review

Front

What does the equation y = -25x - 17 represent in the context of a scuba diver's depth?

Back

The equation represents that the diver starts at 17 meters below sea level and descends at a rate of 25 meters per hour.

Front

What is the slope of a line and how is it represented in an equation?

Back

The slope of a line represents the rate of change of y with respect to x. It is represented as 'm' in the equation y = mx + b.

Front

If Juan paid $176 for 8 concert tickets, how do you calculate the cost of each ticket?

Back

Divide the total cost by the number of tickets: $176 ÷ 8 = $22.00.

Front

What is the equation of a line with a slope of -2/3 and a y-intercept of -3?

Back

The equation is y = -2/3x - 3.

Front

How can you express the total number of toy cars Ishaan has after x months?

Back

The equation is y = 4x + 15, where y is the total number of cars and x is the number of months.

Front

What does a negative slope indicate about a line on a graph?

Back

A negative slope indicates that as x increases, y decreases.

Front

What is the y-intercept in the equation y = mx + b?

Back

The y-intercept is the value of y when x is 0, represented by 'b' in the equation.

Front

How do you find the slope between two points (x1, y1) and (x2, y2)?

Back

The slope is calculated as (y2 - y1) / (x2 - x1).

Front

What does it mean if a line has a slope of 0?

Back

A slope of 0 means the line is horizontal, indicating no change in y as x changes.

Front

What is the formula to calculate the total cost if each item costs 'p' and 'n' items are purchased?

Back

Total cost = p * n.