Question 14: y = mx +b is a linear relation between x and y. What does this mean? What is the shape of the graph of y against x? What does m and b represent in this relation? y = mx +b is the slope intercept form of a linear equation, it forms a Question 15: (1) The distance (x) traveled by an object moving with a constant acceleration a for a time t is given by the relation: (a) Write the equation in the form y = mx + b and identify m and b. What is the independent variable and what is the dependent variable? (b) How will you draw a graph using this relation to obtain a straight line? (c) What quantity does the slope of this graph represent?