how do I sketch the relationship between INC and EDU as implied by the estimated regression equation

INC; = Bo + B.GEN; + B,EDU; + BEDU; xGEN; + BAAGE; + B;AGE, + &; where INC. = monthly income earned by individual i (measured in euros per month), GEN, = gender of individual i (=1 if male, 0 = female), AGE, = individual i's age (measured in years), and EDU, = individual i's education (measured in years). Using the data from 1,524 German workers, the researcher estimated the above model and obtained the following (incomplete) summary outputs: Call: 1m(formula = INC ~ GEN + EDU + EDUXGEN + AGE + AGE2, data = dat) Residuals : Min 1Q Median 30 Max -3911.2 -1027.5 -160.5 785.9 16244.5 Coefficients: Estimate Std. Error t value pr (> |t/ ) (Intercept) -3588 .510 767 . 608 -4.675 3. 20e-06 * * * GEN -1194 . 448 418 . 012 -2.857 0. 00433 * * EDU 124.479 28.563 EDUXGEN 99. 178 36. 140 AGE 265 . 010 32. 021 8. 276 2.75e-16 * * * AGE2 -2. 941 0. 360 -8. 170 6. 42e-16 *** Signif. codes: 0 '* * *' 0. 001 (**' 0.01 (*' 0.05 '.' 0.1 ' ' 1 Residual standard error: 1601 on 1518 degrees of freedom Multiple R-squared: 0.1157, Adjusted R-squared: 0.1128 F-statistic: 39.73 on 5 and 1518 DF, p-value: