Firs solve the function for range of values of x
suppose f(x)=3x+10
then take the range from -3<=x<=3
now u get the values as:-
x-- -3 -2 -1 0 1 2 3
f(x)- 1 4 7 10 13 16 19
now make a Cartesian plane and plot the graph x against f(x)
keep the values of x on x-axis and those of f(x) on y-axis
also keep in mind the slope of the line or gradient in 3 and y intercept that is the point where line intercepts y-axis in 10 thus the equation is in the form of y=mx+c where m=3(gradient) and c=10(y-intercept) in the above equation
hope u get it
