Unit 3: Linear Equations - Flashcard Review

Front

What makes a graph proportional?

Back

A proportional graph is a straight line that passes through the origin (0,0).

Front

What is the y-intercept in the equation y = -2x + 5?

Back

The y-intercept is 5.

Front

What does the equation y = 2x + 2 represent graphically?

Back

It represents a straight line with a slope of 2 and a y-intercept of 2.

Front

What is the y-intercept?

Back

The y-intercept is the value of y when x = 0.

Front

Which equation matches the graph with a steep slope?

Back

y = 8x has a steep slope.

Front

What is the slope of the line represented by the equation y = 3x + 1?

Back

The slope is 3.

Front

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

Back

Slope (m) = (y2 - y1) / (x2 - x1).

Front

What does a negative slope indicate about a line?

Back

A negative slope indicates that the line is decreasing from left to right.

Front

What is the standard form of a linear equation?

Back

The standard form is Ax + By = C, where A, B, and C are integers.

Front

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

Back

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