Pre-calc Sem 1 PRACTICE Exam 2024

Front

What is the y-intercept of a function?

Back

The y-intercept is the point where the graph of a function intersects the y-axis, represented as (0, y).

Front

How do you solve for x in the equation 15x + 1 = y?

Back

Front

What is the cross-product property in solving equations?

Back

The cross-product property states that for two fractions a/b = c/d, the cross-products are equal: a*d = b*c.

Front

What does it mean if an equation has no solution?

Back

An equation has no solution if there are no values that satisfy it, often indicated by a contradiction.

Front

What does the notation g(7) = 14 represent in function notation?

Back

It represents that when the input is 7, the output of the function g is 14, corresponding to the point (7, 14).

Front

How do you evaluate the absolute value expression |x + 9| = -5?

Back

Since absolute values cannot be negative, this equation has no solution.

Front

What is an extraneous solution?

Back

An extraneous solution is a solution that emerges from the process of solving an equation but does not satisfy the original equation.

Front

What is the general form of a linear equation?

Back

The general form of a linear equation is y = mx + b, where m is the slope and b is the y-intercept.

Front

How do you find the x-intercept of a function?

Back

To find the x-intercept, set y = 0 and solve for x.

Front

What is the significance of the slope in a linear function?

Back

The slope indicates the rate of change of the function; it represents how much y changes for a unit change in x.