8th grade Math STAAR Practice Category 1 & 2

Front

What is the solution to the equation 0.17x − 0.03 = 0.03x − 0.002?

Back

x = 0.2

Front

How do you express that the value of y is 6 less than the quotient of x and 4?

Back

y = \frac{x}{4} - 6

Front

What does it mean for an ordered pair to be a solution to a system of linear equations?

Back

An ordered pair (x, y) is a solution if it satisfies both equations in the system.

Front

If the model represents an equation, how do you find the value of x?

Back

You solve the equation for x.

Front

What function represents the relationship between x (pounds of fudge) and y (total cost) if 3 pounds cost $54.99?

Back

y = \frac{54.99}{3}x

Front

What is a linear equation?

Back

An equation that makes a straight line when graphed, typically in the form y = mx + b.

Front

What is the slope-intercept form of a linear equation?

Back

y = mx + b, where m is the slope and b is the y-intercept.

Front

How do you find the slope of a line given two points (x1, y1) and (x2, y2)?

Back

Slope (m) = \frac{y2 - y1}{x2 - x1}.

Front

What does the y-intercept represent in a linear equation?

Back

The y-intercept is the point where the line crosses the y-axis (x=0).

Front

What is the difference between independent and dependent variables in a function?

Back

Independent variable (x) is the input, while dependent variable (y) is the output that depends on x.