Mastering Linear Functions and Equations

What form is used when you have a point and a slope?

• Quadratic form

• Point-slope form

• Standard form

• Slope-intercept form

What is the slope-intercept form of a line?

• ax + by = c

• y - y1 = m(x - x1)

• y = ax^2 + bx + c

• y = mx + b

What does the 'b' represent in the slope-intercept form of a line?

• The y-intercept of the line

• The x-intercept of the line

• The slope of the line

• The point on the line

How do you find the slope of a line given two points?

• (x2 - x1) / (y2 - y1)

• (y2 - y1) / (x2 - x1)

• (y1 - y2) / (x2 - x1)

• (y2 - y1) / (x1 - x2)

What indicates lines are parallel?

• Zero slopes

• Negative reciprocal slopes

• Identical slopes

• Opposite slopes

How do you determine if lines are perpendicular?

• Their slopes are negative reciprocals

• Their slopes are identical

• Their slopes are both zero

• Their slopes add up to 1

What is a positive correlation?

• As x increases, y also increases

• No relationship between x and y

• As x decreases, y increases

• As x increases, y decreases

What does a negative correlation indicate?

• No relationship between x and y

• Both variables remain constant

• As x increases, y decreases

• As x increases, y also increases

How do you find the common difference in an arithmetic sequence?

• Subtract the second term from the third term

• Divide the second term by the first term

• Add the first and second terms

• Subtract the first term from the second term

What is the formula for an arithmetic sequence?

• a_n = a_1 * r^(n - 1)

• a_n = a_1 + (n - 1)d

• a_n = a_1 / (n - 1)d

• a_n = a_1 + n/d