X equals POSITIVE one. so 63 minus one equals 62. the answer is a
5 units (extra characters......)
In order to answer this problem, let us assume that x is the number of hours (the independent variable) and y is the score obtained (the dependent variable). The value 65.8 is the y-intercept which means that we will get y = 65.8 if x is equal to zero. This means that 65.8 is the score that one can get if he does not study at all.
20= x + 0. That is simple, but very true.
