8th Winter Exam Do Now #3

Front

Find the slope of the line that passes through (6,7) and (4,2)

Back

Slope = (y2 - y1) / (x2 - x1) = (2 - 7) / (4 - 6) = 5/2

Front

Find the slope of the line that passes through (3,4) and (8,9)

Back

Slope = (y2 - y1) / (x2 - x1) = (9 - 4) / (8 - 3) = 1

Front

What is the value of the expression x² + y² + x - y when x = -1 and y = 3?

Back

x² + y² + x - y = (-1)² + (3)² + (-1) - (3) = 1 + 9 - 1 - 3 = 6

Front

What is the slope of a vertical line?

Back

The slope of a vertical line is undefined.

Front

What is the slope of a horizontal line?

Back

The slope of a horizontal line is 0.

Front

Solve for y: 5x - y = 16

Back

y = 5x - 16

Front

What is the formula for calculating slope?

Back

Slope (m) = (y2 - y1) / (x2 - x1) where (x1, y1) and (x2, y2) are two points on the line.

Front

If the slope of a line is 3/5, what does this mean?

Back

For every 5 units moved horizontally, the line moves up 3 units.

Front

What is the slope of the line represented by the equation y = 2x + 3?

Back

The slope is 2.

Front

What is the y-intercept of the line represented by the equation y = -4x + 7?

Back

The y-intercept is 7.