equation of a straight line

How do you find the equation of a line given the gradient and y-intercept?

• Use the formula: @@y = mx + c@@, where m is the gradient and c is the y-intercept.

• The equation is found by using the formula: @@y = c - mx@@.

• You can determine the equation by calculating the slope and then using @@y = mx^2 + c@@.

• The equation can be derived from the points on the line using the formula: @@y = mx + b@@.

What is the equation of a straight line with a gradient of 0 and a y-intercept of 2?

• @@y = 2@@

• @@y = 0@@

• @@y = 2x@@

• @@y = -2@@

How can you determine if two lines are parallel using their gradients?

• Two lines are parallel if they have the same gradient (slope).

• Two lines are parallel if they intersect at a right angle.

• Two lines are parallel if their gradients are negative.

• Two lines are parallel if they have different gradients.

How do you graph a linear equation?

• Plot the y-intercept on the y-axis, then use the gradient to find another point, and draw a straight line through the points.

• Draw a curve that connects the x-intercept and y-intercept.

• Use a ruler to draw a vertical line through the y-intercept.

• Plot random points on the graph and connect them with a line.

What is the general form of a linear equation?

• @@Ax + By + C = 0@@

• @@y = mx + b@@

• @@Ax^2 + By^2 + C = 0@@

• @@y = A + Bx@@

What is the equation of a straight line with a gradient of 4 and a y-intercept of 0?

• @@y = 4x@@

• @@y = 2x + 1@@

• @@y = 4x + 3@@

• @@y = x + 4@@

What is the relationship between the gradients of perpendicular lines?

• The gradients are equal to each other.

• The gradients are negative reciprocals of each other.

• The gradients are always positive.

• The gradients are always negative.

What is the equation of a straight line with a gradient of 3/4 and a y-intercept of -1/2?

• @@y = rac{3}{4}x - rac{1}{2}@@

• @@y = rac{4}{3}x + rac{1}{2}@@

• @@y = -rac{3}{4}x - rac{1}{2}@@

• @@y = rac{3}{4}x + rac{1}{2}@@

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

• @@y = mx + b@@

• @@y = b + mx@@

• @@y = mx - b@@

• @@y = m + bx@@

What is the equation of a straight line with a gradient of 2 and a y-intercept of 3?

• @@y = 2x + 3@@

• @@y = 3x + 2@@

• @@y = 2x - 3@@

• @@y = -2x + 3@@